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i. Unguided media.
The unguided media is the wireless media. It simply transports electromagnetic waves without
using any physical conductor. Signals are normally broadcast through the air and thus are
available to anyone who has the device capable of receiving them. Unguided signals can be
travelled from source to the destination in several ways. These ways include ground propagation,
sky propagation and line of sight propagation,
ii. Router.
A router is a device that forwards data packets between computer networks, creating an overlay
internetwork. A router is connected to two or more data lines from different networks. When a
data packet comes in one of the lines, the router reads the address information in the packet to
determine its ultimate destination. Then, using information in its routing table or routing policy,
it directs the packet to the next network on its journey, Routers perform the "traffic directing"
functions on the Internet. A data packet is typically forwarded from one router to another through
the networks that constitute the internetwork until it reaches its destination node.
iii. Network interface card
A network interface card (NIC) is a computer circuit board or card that is installed in a computer
so that it can be connected to a network. Personal computers and workstations on a local area
network (LAN) typically contain a network interface card specifically designed for the LAN
transmission technology, such as Ethernet or token ring. Network interface cards provide a
dedicated, full-time connection to a network. Most home and portable computers connect to the
Internet through as- needed dial-up connection. The modem provides the connection interface to
the Internet service provider.
iv. Hot Spot
A hot spot is a site that offers Internet access over a wireless local area network (WLAN)
through the use of a router connected to a link to an Internet service provider. Hotspots typically
use Wi-Fi technology. Hotspots may be found in coffee shops and various other public
establishments in many developed urban areas throughout the world
v. Wi-Fi
It is a popular technology that allows an electronic device to exchange data or connect to the
internet wirelessly using radio waves. A device that can use Wi-Fi (such as a personal computer,
video-game console, smartphone, digital camera, tablet or digital audio player) can connect to a
network resource such as the Internet via a wireless network access point. Such an access point
(or hotspot) has a range of about 20 meters (65 feet) indoors and a greater range outdoors.
Hotspot coverage can comprise an area as small as a single room with walls that block radio
waves or as large as many square miles — this is achieved by using multiple overlapping access
points.
Kavungya answered the question on May 13, 2019 at 13:21
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Fourth generation languages (4GL’s) consist of a variety of software tools which enable end
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Date posted: May 13, 2019. Answers (1)
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Date posted: May 13, 2019. Answers (1)